The ecu silver coins of King Philip II come from the Roman Empire medieval state of Brabant, located in the region of today's Netherlands and Belgium. They appear in 1/10, 1/5, 1/2, and 1 ecu denominations, with weights and diameters roughly like this:

Copper liards are also found with similiar inscriptions and design patterns. Evaluating these coins, both copper and silver, is difficult. Each coin stands on its own merits, and just about all of them are worn to a frazzle. The larger, more well preserved coins will be worth more. A very, very approximate estimate runs like this: